Sanguine Brushstroke is a uncommon Enchantment card from Mystery Booster 2 (MB2), collector number 260. Current market price: — (foil $34.96), TCGplayer market prices via Scryfall.
When Sanguine Brushstroke enters the battlefield, create a Blood token and conjure a card named Blood Artist onto the battlefield. Whenever you sacrifice a Blood token, each opponent loses 1 life and you gain 1 life.